The low workability of special brands corrosion-proof, heat resisting and high-resistance steels and alloys, widespread in details and nodes of modern machines, causes high labour input and the cost price of their manufacture. In this connection probes of possibilities of heightening of capacity and lowering of the cost price of handling of these materials at the expense of improvement of working conditions of the cutting instrument and, in particular, at the expense of application of various technological cutting fluid (TCF). High temperatures in a workpiece range, arising because of low heat conduction of intractable materials, define necessity of probe of the temperature phenomena for a cutting zone. The further development of a technique of definition of temperatures is of interest for these aspects of materials in a cutting zone at use ТСF and the account of their influence on a choice of optimum conditions of cutting. Researches of limitations on the roughness of the treated surface and cutting temperature are executed, in-use during optimization of cutting regimes at finish turning stainless materials, including with the use of technological cutting fluid. Analytical dependences of optimum cutting serve and speed from the parameters of finish turning process are set, providing the quantitative estimation of possibilities of the cutting regimes increase due to application of TCF. The estimation of efficiency of TCF application is executed on the basis of coefficient of increase of the treatment productivity.